Waste-trap.



L. E. WELCH. WASTE TRAP. APPLIOATIONTILBD MAY 28.I 1908.

933,279. I1 afmtea sept. v, '1909.

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30. Y rounds the discharge endv of the trap and in PATENT canon.

, LAWRENCE E. WELCHVOFMERIDEN, CONNECTICUT.

. WAs'rEif'r'aAr.

Specification of Letters Patent'.

Patented sept. 7, ieee.

Application led lVIay 28, 1908. Serial No. 435,495.

To all whom 'it may concern:

Be it known that I, LAWRENCE E. VnLCH, a citizen of the United States, residing at Meriden, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in lVaste- Traps; and I do declare the following totbe a full, clear, and exact description of I[the invention, such as will enable others skilled in the art to which-it appertains to make and use the same.

My invention relates to waste traps and particularly to that type-.of trap used in connection with sinks, lavatory bowls and laundry tubs. y l

Heretofore the traps whether an S, a half S, a three-quarter S or a 'run-way trap, were constructed of pipes ofthe same size throughout their length and were connected to the discharge pipe, also of the same di- Furthermore, the Vent pipe was connected directly to the second bend of the pipe so that thewaste in the discharge fre-k quent-ly stop ed the vent pipe andprevented proper venti ation.

It is the object of my invention to obviate these difficulties, and broadly speaking consists in discharging the contents of the lavar tory bowl, sink or laundry tub into an enlarged discharge or sewage pipe, which sulrconnecting the vent pipe to the top of the discharge or sewage pipe in such a manner that the waste being discharged from the bowl or tub` will not enter or obstruct the vent pipe.

With these and other objects'in View, the invention consists of certain novel features of construction, combination and arrangement of parts, as will be more fully described and particularly pointed out in the appended claims.

In the drawings, Figure 1 is asection of an S trap, and Fig. 2 is a sectional view of a half S trap. f

Referring more especially to the drawings,` 1 represents the pipe which leads from the lavatory bowl, laundry tub or sink,

which is connected tothe trap 2, provided on its under side with the usual flushing nipple 3. The opposite hook or leg of the trap 4 is secured by a wiped-joint with its discharge end 6, 'extending into a central position within the enlarged discharge or sewage pipe 7. Situated'on top of the discharge pipe 7 ,which-extends above the hook 4 is the coupling member 8, threaded upon its outer side to receive the locking nut 9, of

In the construction shown in Fi 2 the" down spoilt or pipe 11, from the bow is connected to the trap 12, with the usual ilushing l nipple 13. The opposite end of this half S trap enters and is passed over the bottom of the interior-ot the enlarged discharge or sewage`pipe14, which is` connected to the discharge end of the 'trap by a wiped-joint 1.5. On the top of the discharge pipe 1,41 provide a coupling 16, which is threaded t0 engage the lock nut 17, of the vent pipe 18. In this instance the bottom of the dischar e or sewage pipev 14" is preferably Inae straight, and is bnlgedon its upper side so as to be entirely free of the discharge end of the trap.` I.

It will be noticed from' the inspection of Fig. 2 thaty the under side of the disch'ar e end of the trap is cnt away, so ais'to provide for proper ventilation.

From the foregoing description, taken -ill connection with the accompanying drawings, the construction and operation or thel invention will be readily understood without-rel quiring a more extended eX lanation.

Various changes in the crm, 4proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advanta es of this invention as defined in the appen ed claims. v

entirely around the same, between said endr and the wall of the waste pipe.

2. i he combination with a waste pipe having an enlar ed receiving portion, and a trap.

having' its ischarge end projecting a suit-V abled istance into the transverse center of said Having thus described-my invention, what BISA ina

i pipe, whereby the discharge end is held free l my hand in presence of two subscribing Witof the pipe and a space is formed entirely messes. around the same between said end and the 1 1 Wall of the Waste pipe, said discharge end LAWRLNCBJ L WBLCH 5 being sheared off on its underside to provide ritmes/ses:

a space for proper ventilation.v L. C. PARDEE, In testimony whereof I have hereunto set BENJ. PAGE. 

